I think the site looks nice clean & professional, the subtle grey to black gradients give it a nice feel - one thing that does jar for me is the centrally aligned body copy, aligning the main content under the headings left, or justified would be an improvement for me You could possibly reduce the size of the navigation boxes so they all sit neatly on one line. I think some of the image sizes could be reduced quite a bit to improve the initial loading time - that's just my two pence worth of constructive criticism though! its a nice looking site
Cheers
Robin